SUMATRA STRATIGRAPHY WORKSHOP 2005 BACKGROUND The success of hydrocarbon and other minerals exploration and production cannot be separated from the development of the geologic concepts. Stratigraphy is one of the most important geologic concepts in hydrocarbon and mineral exploration. It dependslargely on the data and concepts which often evolve through time. Better understanding of the stratigraphy often offers new business opportunities and in turn, new business opportunities often refine our stratigraphic understanding. This process has been widely recognized in the industry. A few years ago, Stratigraphy Workshops focusing only for Java Stratigraphy was conducted by IAGI (Indonesian Association of Geologists) to review and update the stratigraphy of Java by including recent data, concepts and other related findings. Other than to discuss the Stratigraphy of Java, the workshops have other purpose to revisit the Lexicon of The Stratigraphy of Indonesia, especially for Java Region. The updated, revised Lexicon was then launched in Stratigraphy Forum in Bandung in 2004. Accordingly, inspired by preceding accomplishment of the Stratigraphy of Java, the Indonesian Association of Geologists (IAGI) will conduct "Sumatra Stratigraphy Workshop" to review, update and revisit the Stratigraphy of Sumatra. The committee invite competent resources in all areas within Sumatra Region to the workshop. We expect that each area within Sumatra region is represented both in term of works that have been done and experts in that particular area. Call for Abstract, Paper, and Poster For the following subjects : * Stratigraphy of Central Sumatra Basin * Stratigraphy of West Sumatra Basin * Stratigraphy of North Sumatra Basin * Stratigraphy of South Sumatra Basin DATE AND VENUE The workshop and associate programs will be held in Duri, Riau on September 12th - 13th, 2005. KEYNOTE SPEAKERS (candidate) * Ruskamto Soeripto (PT Caltex Pacific Indonesia) * Karsani Aulia (BOBCPP-Bumi Siak Pusako) * Awang Satyana (BPMIGAS) PROGRAMS * Reception and Ice Breaker, September 11 * Keynote Speech, September 12 * Technical Session Each Area, September 12 * Poster Session, September 12 (Night) * Panel Discussion, September 13 * Closing and Workshop Adjourn, September 13 DEADLINES : Juli 31, 2005 : Workshop participant confirmation August 26, 2005 : Abstract submission for oral and poster presentation August 31, 2005 : Final confirmation For better arrangement, please fill in the Confirmation Form and send it by postal service or fax it to the Secretariate as soon as possible. Secretariate : ATTN : Hendra A. Suhendar PT. CALTEX PACIFIC INDONESIA Balam-AMT Duri NMO-A20 Duri, Riau 28884 Phone : 0765-827086 Fax : 0765-826087 Email : [EMAIL PROTECTED] The Committe and The Indonesian Association of Geologist (IAGI) thank the Management of PT. Caltex Pacific Indonesia and the Management of Badan Operasi Bersama (BOB) PT. BSP Pertamina Hulu, CPP Block, Central Sumatra Basin for their corporate sponsorships for this event. Participant Confirmation Form Nama : Title : Company : Department : Current Position : Company Address : City : Zip : Office Phone No : Alternate Phone No : Fax No. : Email : Presentation Option : (Oral/Poster)* Presentation Title :

